Water heater



0. WALTERS.

WATER HEATER.

FILED MAY 15. 19I8.

Jan. 9, 1923.

117x52 me; ES W 14 TEES.

Patented darn it,

WILLIAM. l.

wanna HEATER.

Application file [1 May 15,

To all whom it may concern. i

Be it known that 1, CHARLES l i anrnns, a citizen of the United Statesand a resident of the city of Chicago county of Cook, and State tIllinois have invented certain new and useful Improvements in a l/VaterHeater; and I do hereby declare that the following is a full, clear, andexact description of the same reference being had to the accompa nyingdrawings, and to the numerals of reference marked thereon which form apart of this specification.

In practically all water heaters of the burner and coiltype the coldwater to be heated is admitted at the lower end of the water coil andpasses upwardly through the coil to be heated by meansot air which isdrawn into the lower portion of the heater to be heated by the burner,and is then caused to rise in the heater around the water coil and bedrawn out through a flueor draft pipe connected to the upper portion orend of the water heater to cause a forced draft therethrough. A greatamount of heat is thus wasted due to the fact that the heated air onlyacts in its upward passage through the heater to heat the water, and isthen exhausted while still containing sutlicient heat units adapted forfurther heating This invention relates to an improved form of a waterheater wherein the air which is heated by a burner is permitted to passupwardly through a water coil and then pass downwardly around the watercoil to be exhausted from the lower portion of the heater without forceddraft to thoroughly heat the water and at ford an arrangement wherebythe heated air acts in both its upward and downward passagel'lll'fllltl'l. the heater to utilize substantially all the heat unitsin the heated air lhtllfl'e it is permitted to be exhausted from thelower portion ol the heater.

llt is an object of this invention to con-- struct a water heaterwherein the circulati ng air after heating the water is perm" o l toescape through the lower p tion o? the heater without forced drafhAnother object of the invention is the construction ofa water heaterwherein an opening is provided in the lower portion of the heater tocheck the draft to permit substantially all of the heat units in theheated air circulating in the heater to be 1918. Serial No. 23%,593.

utilized before the air is exhausted through the lower portion of theheater.

It is also an object of the invention to construct a water heaterwherein the loops of the water coil are disposed. closely together topermit heated air to pass 'upwardly through the coil and then downwardlytherearound to utilize practically all ortthe heat units in the heatedairfor heating the water circulating in the coil before the air ispermitted to escape from an air 6 outlet pipe positioned at the lowerportion of the heater. i

It is animporta-nt object of the invention to construct a water heaterwherein the heated air is caused to circulate upwardly through anddownwardly around a water coil to heat the water therein before the airis permitted to leave the lower portion of the heaterthrough an exhaustpipe wherein the draft has been checked.

Other and further important objects of this invention will be apparentfrom the disclosures in the specification and drawings. c c i Theinvention (in a preferred form) is illustrated in the drawings andhereinafter more fully described.

On the drawings:

Figure 1 is a front elevation of a water heater embodying the principlesof this invention and showing parts broken away to show the interiorconstruction.

Figure 2 is a section taken on line 2-2 of Figure l. with parts inelevation.

Figure 3 is an enlarged section taken on line 3-3 of Figure 2. t Figure4 is an enlarged section taken on line 4-4, of Figure 2, with partsomitted. its shown on the drawings:

"The reference numeral 1, indicates a base or support provided with aplurality of air intake openings 2, in the sides thereof, and havingintegrally termed therein a flange ring 3 to receive seated thereon theapex tured bottom oi base plate 4;. of an outer casing or housing; 5;which is closed at its upper end. Provided in the lower front portion.of the casing 5, is a door 6, adapted f to permit lighting of a largegas burner 7. which is securely mounted centrally in the base plate 4,and is connected with a gas supply pipe 8 equipped with a'suitalolevalve 9, on the exterior of the heater;

end of which rests upon the partitionplate 11, Surrounding the centralopening therein, and having a portion thereof removed from the lowerfront side thereof to afford an opening 13. The upperend of thesleeve12, which isopen, is closed by means of a cover or capqli l, whichengages around the upper end of the sleeve and 'is'suspended in positionfrom the top of the outer casing by means of screw bolt'lfi.

Projectin into-a suitable openingprovided iirthe rear of the outercasing directly above the partition plate 10, is one end of an-air=outlet or exhaust pipe 16. Provided in the partition plate-'10,directly in frontof the inner open: end of. the exhaust pipe 16 isan:opening' 17', actingto-check anydra-ft throughthe exhaust pipe 16 Awater coil 183' is disposed vertically withinathesleeve 12;,'and hasthe-loops there of closely-seated one on-the-'other-toprevent air from:passing therebet weeni The lower loops of the-watencoilaproject into thehood 11," and-terminate in a straight pipe 19; which connects-up with acold water, supply pipe 20. The: uppermost loops of the coil areseparated and loop around within one-- anotherand terminate in astraight pipe "21, which projects upwardly through the cap 14, and thetop of the outer casing 5, to connect up withany hot water pipe system.1 The operation-is as follows 2' I By-bpening the gas valve9, gas is supplied to the-- burner 7, which is lighted through the door 6, therebycausing the air surroundingthe burner to be heated: The heated airrises-,- and due to the: arrangement of the water coil the heated-airpasses upwardly through the coil-to heat theuvater circulating: upwardlytherethroughv The upper end of the sleeve 12, is closed by the cap 1. 1,which acts to deflect theheatcd air downwardly around the-s upperseparated loops of the coil and further causes the heated. air-to passdownwardly around the lation of heated air as indicated-by the an rowsThehe'ated iair reaching the lower end of theslee've 12, onthevexteriorof the coil-18, passes through-the opening 131: into the space affordedbetween the? sleeve 12 and the inner walls ofthe casing -ii a-nd' thenpasses outwardly ,or' is exhausted through ope ning 17, is xprevide dthe1plate1'10;toeheoleranyi drafti g-m s d suction in the exhaust pipe16. An arrangement is thus afforded whereby the heated air within theheater utilizes substantially all of its heat units to heat the watercirculating in the coil 18, both as said heated air passes upwardlythrough the coil'and'as it passes downwardly around the exterior of thecoil. The water heater is thus highly efiicient and results in a minimumwaste of heat, since the air passing outwardly through the exhaust pipe16, has practically exerted a heating effect upon the water in" the coilduring the entire upward and downward passage'of the air through thesleeve 12.

The tight or close arrangement of the loops of the'coil 18, preventstheheatcd air from passing therebetwecn untilithe upper end of the coilis reached, and since there is no forced draft or suction in the heaterthe heated air does not readily pass; from vthe heater. The coil 18-,being heated from both sides causes the water flowingin'thecoil pipes tobe rapidlyheated, thereby produc ing a water heaterof simple-andeffective design wherein the heated air circulates through the heaterand-isnexhaustedz with out suction or forced draft through; the lower:portion of the heateri V I am' aware that numerous detailsof construction may be "varied-through :a wide range without departing; fromthe princis ples of this invention, and-I therefore'do not purposelimiting the patent-grantedotherwise than necessitated by the prior art;

I claim as my invention: I 1

1. A water heater embracing an outerv casing a burner therein, anaperturedparti tion wall in said casing above said burner, a downwardlydirected hood connected 1 insaid partition wall above said burnen awater coil in said casing projecting into said hood, an inner casing forenclosingM-saidwater coil having an opening in 'the lower portionthereof, saidburner adapted to heat the 'air in said inner casing toc'ause the heatedair to rise-in said-coil and be deflected downwardly bythe closed upper end of said inner casing to cause said heated'air toheat the water in saidcoil both by the upward and downwardmovement'ofsaid heated air a waste gas exhaust pipe con nected withthe lowerportion-"of said outer casing above said. partition wallrto afford v ameans for the escape of thespentqases outer portion of'thecoi-l to setupa circa-j rated -J a heater-for heatingahecan: mesald casing, a closedinner casing enclosing said coil and adapted to cause the heated air topass upwardly through said coil and then downwardly around said coil toheat the water, a waste gas exhaust pipe connected to the lower portionof the outer casing, and a plate supporting said inner casing and havingan opening therein to check the draft in said exhaust pipe.

3. In a water heater of the class described, an outer casing, apartition plate secured in the lower portion thereof, a water coildisposed within said outer casing projecting downwardly through saidpartition plate, a burner therebelow, a closed inner casing on saidpartition plate enclosing said coil and having an opening in the lowerside 'portion thereof, said burner adapted to heat the air in the heaterto cause the heated air to pass upwardly and, then downwardl around saidcoil within said inner casing to heat the water passing through saidcoil and a waste gas exhaust pipe connected in the lower portion of saidouter casing above said partition plate to permit the spent gasesissuing from the opening in said inner casing to pass outwardly throughsaid exhaust pipe, said partition plate provided with an opening belowthe inner end of said exhaust pipe for checking any draft therein.

In testimony whereof have hereunto subscribed my name in the presence oftwo subscribing witnesses.

CHARLES WALTERS. 4

Witnesses:

CHARLES W. HILLS, J12, LAWRENCE REIBsTEIN.

